Dipalmitoyl Hydroxyproline ( DPHP ) = 2% Perfect-C ™ ( Ascorbyl Tetraisopalmitate ) = 5% Questions 1) These 2 according to the percentage written above. Can it be used together in the oil formula? 2) If there are 2 of these in the oil formula, you must put Vit E (not sure because the formula doesn'...